<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Title</title>
</head>
<body>

</body>
<script>
	const arr = [1,2];
	// console.log(arr);
	// console.log("map",new Map());
	// console.log("set",new Set());
	// console.log("string",new String(""));
	// for(let key of "abcdefg"){
	// 	console.log(key);
	// }
	
	const obj = {
		a:1,
		b:2,
		c:3
	}
	console.log(obj);
	// for(let key of obj){
	// 	console.log(key)
	// }
	
</script>
</html>